Is Elkhart County, IN a radon risk area?

Elkhart County is mapped as Zone 1 - Highest Potential by EPA — meaning the county-wide average indoor level is predicted above 4 pCi/L. Nationally, Elkhart County ranks higher in radon potential than 97% of rated counties (the 97th percentile).

How Elkhart County compares

About 207,436 people live in Elkhart County, Indiana, spread over 463.158 square miles. Averaged across its land area, Elkhart County runs about 448 people per square mile. Rank 95 by population within its EPA zone puts Elkhart County at the 91st percentile among zone peers. EPA's geology-based Region 5 groups Elkhart County with 523 other counties nationally sharing its underlying rock and soil profile.

What this actually means for a house in Elkhart County

Where the national indoor average runs about 1.3 pCi/L, Elkhart County's Zone 1 rating puts its predicted county average above EPA's 4 pCi/L action level itself. Some Elkhart County homes will test comfortably under the action level despite the county's Zone 1 rating — the only way to know which kind of home you have is an actual test.

Testing and mitigation in Elkhart County

Nothing about Elkhart County's EPA zone changes the mitigation number: $800–$2,500 nationally (around $1,200 typical), set by the house's foundation rather than the county it sits in — and only relevant once a test actually clears 4 pCi/L.

Find Indiana's state radon program

Elkhart County's test kit answers today; a Airthings radon monitor keeps answering for Elkhart County over time. Affiliate link, RadonZoneCheck earns a commission there, at no extra cost to you. RADONZONE-10OFF at checkout knocks 10% off.

More on how this number was built

Elkhart County's zone, rank and region all trace back to named EPA and Census sources — the methodology guide lists exactly which ones. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.